Which has a bigger cup — Bob Reeves 4G or Denis Wick 5AL?

The Bob Reeves 4G has a cup diameter of 26.00 mm / 1.0236 in compared to 25.73 mm / 1.0130 in on the Denis Wick 5AL — a difference of 0.27 mm / 0.0106 in. A wider cup generally produces a fuller, darker tone but requires more air support.

How does cup depth compare between Bob Reeves 4G and Denis Wick 5AL?

The Bob Reeves 4G has a very deep cup while the Denis Wick 5AL has a medium cup. Deeper cups favor a darker, richer sound; shallower cups provide more brightness and easier upper register.

Bob Reeves 4G vs Denis Wick 5AL

Name: Denis Wick 5AL
Brand: Denis Wick

The Bob Reeves 4G has a wider cup diameter, the Bob Reeves 4G features a deeper cup.

Overall Comparison Cup Diameter Cup Depth Rim Width Throat Diameter Backbore Finish Material

The width of the rim surface that contacts the lips. Wider rims improve endurance; narrower rims improve flexibility.

Mouthpiece A

Bob Reeves 4G

• Trombone

Rim width—

Best suited for

🎻Orchestral playing — large cup for full, dark tone

Mouthpiece B

Denis Wick 5AL

• Trombone

Rim width6.64 mm / 0.2614 in

Best suited for

📣High-volume projection — open throat for power

Which is better?

Neither mouthpiece clearly dominates the other — the right choice depends on your embouchure, playing style, and the sound you're after. Try both if possible.

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Bob Reeves 4G vs Denis Wick 5AL

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